Tank Math Lab

Freshwater fish group

Cichlids

Intelligent, often territorial fish that need a plan for adult size, territory and sight breaks.

15 profiles in this category. Each card uses a small directory thumbnail; open a profile for the larger reference image and full care notes.

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15 profiles shown
Bolivian ram (Mikrogeophagus altispinosus) in an aquarium

Cichlids

Bolivian ram

Mikrogeophagus altispinosus

8 cm adult29 gal minimum

Territorial, especially when breeding. A practical community profile with adult-size guidance.

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Kribensis (Pelvicachromis pulcher) in an aquarium

Cichlids

Kribensis

Pelvicachromis pulcher

9 cm adult29 gal minimum

Predatory and territorial. Pairs become aggressive when guarding fry.

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Discus (Symphysodon spp.) in an aquarium

Cichlids

Discus

Symphysodon spp.

18 cm adult75 gal minimum

Generally peaceful in a suitable community. Large, social and warm-water; demands excellent maintenance and stability.

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Oscar (Astronotus ocellatus) in an aquarium

Cichlids

Oscar

Astronotus ocellatus

30 cm adult75 gal minimum

Predatory and territorial. A very large, messy predator; plan for a dedicated aquarium.

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Keyhole cichlid (Cleithracara maronii) in an aquarium

Cichlids

Keyhole cichlid

Cleithracara maronii

12 cm adult40 gal minimum

Generally peaceful in a suitable community. One of the calmer cichlids; needs cover and peaceful companions.

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Severum (Heros efasciatus) in an aquarium

Cichlids

Severum

Heros efasciatus

20 cm adult75 gal minimum

Territorial, especially when breeding. A practical community profile with adult-size guidance.

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Rainbow cichlid (Herotilapia multispinosa) in an aquarium

Cichlids

Rainbow cichlid

Herotilapia multispinosa

12 cm adult40 gal minimum

Territorial, especially when breeding. A practical community profile with adult-size guidance.

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